<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="author" content="wangbo">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>动画</title>
  <style>
    div {
      width: 100px;
      height: 50px;
      background: red;
      color: white;
      font-weight: bold;
      position: relative;
      animation: mymove 5s 5;
    }

    /* normal	默认值。动画按正常播放。	
    reverse	动画反向播放。	
    alternate	动画在奇数次（1、3、5...）正向播放，在偶数次（2、4、6...）反向播放。	
    alternate-reverse	动画在奇数次（1、3、5...）反向播放，在偶数次（2、4、6...）正向播放。 
    */
    #div1 {
      animation-direction: normal;
    }

    #div2 {
      animation-direction: reverse;
    }

    #div3 {
      animation-direction: alternate;
    }

    #div4 {
      animation-direction: alternate-reverse;
    }

    @keyframes mymove {
      from {
        left: 0px;
      }

      to {
        left: 300px;
      }
    }
  </style>
</head>

<body>

  <p><strong>注意:</strong> animation-timing-funtion属性不兼容 Internet Explorer 9以及更早版本的浏览器</p>

  <div id="div1">linear</div>
  <div id="div2">ease</div>
  <div id="div3">ease-in</div>
  <div id="div4">ease-out</div>
  <div id="div5">ease-in-out</div>

</body>

</html>